You can check your mail on a website with with a browser like Firefox, Safari, Chrome, or Internet Explorer at the following URL:
http://www.yourdomainname.com/webmail
(remember to replace "www.yourdomainname.com" with the actual name of your domain)
Please note that you will be asked to log in via a pop-up window. Enter your full email address and email password, then click OK.
Once you are logged-in, you will have the options to change your password, set forwarding, create an auto-responder and manage other options before you click the atmail logo to check your HTML-based email.